US1173847A - Eraser. - Google Patents

Description

n. A. NICKEL e s. swANsoN'.

ERASER.

APPLICATION FILED JULY 2.19I5.

Patented Feb. 29, 1916.

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DANIEL A. NICKEL AND SVEN SVVANSON, 0F

OAK PARK, ILLINOIS, ASSIGNORS TO BECKLEY CARDY COMPANY, OF CHICAGO, ILLINOIS.

FRASER.

Application led July 2, 1915.

To all whom t may conc-ern:

Be it known that we, DANIEL A. NICKEL and SVEN Swanson, citizens of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented new and useful Improvements in Erasers, of which the following is a specification.

This invention relates to an eraser designed primarily for use in removing chalk marks from a blackboard or the like.

The primary object of the invention is to provide a construction for an eraser of the class described, which embodies a casingfor the body of the eraser, said casing comprising a rectangular strip of textile material which is bent and stitched to provide longitudinally extending beads forming a handliold, said beads terminating in depending walls which cooperate with the body of the eraser to provide an erasing surface.

A still further object of the invention is to provide means for retaining the beads upon the casing in spaced relation when pressure is applied to the eraser, as for instance, when it is in use. Y

A still further object of the invention is to connect the body formed by opposed strips with the casing of the eraser by means of a series of flexible elements in such a manner, as to prevent the breaking of the flexible elements when the eraser is in use.

A still further object of the invention is to connect the body of the eraser with the casingby means of the flexible element in such a manner as will cause the entire rubbing surface of the eraser to contact with the surface to be cleaned at all times when the eraser is in use.

With these and other objects in view the invention consists in the improved construction, novel combination and arrangement of parts which will be hereinafter described and particularly pointed out in the claims.

The preferred embodiment of the inv-ention has been illustrated in the accompanving drawing, although no restriction is necessarily made to the precise details of coustruction therein shown, as changes, alterations, and modifications within the scope of the claims may be resorted to when desired..

In the drawing Figure l is a detail perspective view of the improved eraser constructed in accordance with the invention. Fig. 2 is a transverse sectional view on the line 2--2 of Fig. l. Fig. 3 is a longitudinal Specification of Letters Patent.

Patented Feb. 29, 1916.

serial No. 37,727.

transverse sectional view on the line 3 3 of Fig. l showing the manner in which the body of the eraser is secured within the casing.

Like characters of reference denote correspon'ding parts throughout the several. views in the drawing.

rilhe numeral l designates the improved eraser which comprises a casing 2, a body 3 which is formed of opposed strips of mate rial, and which is disposed within the casing and secured thereto by means of spaced flexible elements 4f.

The casing 2 is formed from a rectangular sheet of textile material, which is rolled and stitched adjacent the longitudinal side edges thereof to provide beads 5, said beads being coextensive in length with the sheet of material from which the casing is formed. rlhe beads 5 terminate in depending side walls 6 which are at a right angle to the material forming a portion of the casing intermediate the beads.

Disposed beneath the top portion 7 of the casing and extending into the beads 5 is a rectangular shaped strip of material 8, and maintained in the above mentioned position bythe stitching 9 which serves to maintain the beads 5 in a rolled condition. The strip 8 is formed from some suitable flexible material relatively stiff in comparison to the materia-l from which the body of the eraser is formed, and normally serves to maintain the beads 5 in spaced relation.

Positioned within the casing 2 and contacting with the strip of material S are a plurality of iiexible strips 10 formed of some suitable material to which the particles of chalk will adhere when the eraser is drawn across a surface to be cleaned. The strips 10 form the body of the eraser and are coextensive in length and height with the side walls of the casing, and cooperate with the side walls in forming a plurality of erasing surfaces upon the bottom of the eraser.

The body 3 of the eraser is secured within the casing 2 by means of spaced flexible elements e, each of which have a portion thereof passing vertically downward through the top of the casing 2, at a point intermediate the beads thereon and through the strip 8 and into the body 3 for a short distance. Each flexible element is then passed through a plurality of the strips 10 in a plane parallel with the strip 8 and through one side wall of the casing 2, said elements having a portion thereof again passed transversely Y through said side wall and through all of the strips 10 and the opposite side wall of the casing 2. The flexible elements 4L have the remaining portions thereof passed back through the last mentioned side wall and through the strips l0 until the vertically extending portions of the elements are reached, the last mentioned ends of the elements are then passed upwardly through the body, the strip 8 and top of the casing 2 and sufficiently far above the same to enable the ends of the iiexible element to be tied in a knot.

From theabove described manner of securing the body within the casing it will be seen that when pressure is applied to the beads 5, by the hand of the operator, when the eraser is in use the strips 10 and one side wall of the casing upon opposite sides of the vertically extending portions of the flexible elements are permitted to separate for the greater portion of their height, and that the bottoms of the strips l() and side walls 6 upon opposite sides of the vertically extending portions of the flexible elements are swung upon arcs having their pivot points at the juncture of the horizontally extending portions of the flexible elements with the vertically extending portions thereof, thus relieving the flexible elements of the greater portion of the strain imposed upon the same when the eraser is in use and-thereby preventing the breaking of said elements.

From the foregoing description taken in connection with the accompanying drawing, it will be seen that an eraser has been provided which is inexpensive of manufacture, simple in construction, and highly eiiicient in use.

Having thus described the invention what is claimed as new is 1. An eraser comprising a sheet of material bent and stitched to provide a casing, a body disposed within said casing, and strands of material passing through said body to provide spaced rows of vertical and Copies of this patent may be obtained for five cents each, by addressing the Commissioner'of Patents,

horizontally extending stitchings throughout the entire length of the eraser.

2. An eraser comprising a single sheet of material bent and stitched to provide right angularly extending side walls, strips of lmaterial interposed between the side walls tioned sheet of material and extending into Y the beads thereon adapted to normallyV maintain the beads in spaced relation. l

4. An eraser comprising a sheet of material stitched to provide longitudinally extending beads, side walls depending from said beads, a body located between said side walls and Vformed from loosely opposed vertical strips of material extending longitudinally the entire length of the side walls, and a series of spaced stitchings extending vertically downward through the top ofthe casing and into thebody, said stitchings then extending horizontally through said body and side walls of the casing adjacent the said beads and adapted to permit portions of the said strips of material distant from the` stitchings to be maintained 1n spaced relation while pressure is applied toY said beads when the eraser is in usel without imposing undue strain upon the said stitchings. f In testimony whereof we aflix our signatures in presence of two witnesses. a

DANIEL A. NICKEL.Y SVEN SWANSON. Witnesses;

O. A. I-IaNsoN, ALBIN CARLSON.

Washingtoini). C.

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